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Cochlear implants, hearing loss

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https://www.readbyqxmd.com/read/27918225/clinical-surgical-and-electrical-factors-impacting-residual-hearing-in-cochlear-implant-surgery
#1
Adrien A Eshraghi, Jamal Ahmed, Eric Krysiak, Kadri Ila, Peter Ashman, Fred F Telischi, Simon Angeli, Sandra Prentiss, Diane Martinez, Sandra Valendia
CONCLUSIONS: This study recommends using soft surgical principal and round window insertion to protect residual hearing with favorable anatomical exposure. Further studies are needed to evaluate the impact of the electrical stimulation on the organ of corti and hearing. OBJECTIVE: The objective of this study is to analyze various factors that impact on preservation of residual hearing post-implantation. METHODS: A retrospective study was performed to analyze loss of residual hearing in a cohort of 225 patients implanted in a large academic center...
December 5, 2016: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/27916008/facial-nerve-anomalies-in-paediatric-cochlear-implant-candidates-radiological-evaluation
#2
F B Palabiyik, K Hacikurt, Z Yazici
BACKGROUND: Pre-operative radiological identification of facial nerve anomalies can help prevent intra-operative facial nerve injury during cochlear implantation. This study aimed to evaluate the incidence and configuration of facial nerve anomalies and their concurrence with inner-ear anomalies in cochlear implant candidates. METHODS: Inner-ear and concomitant facial nerve anomalies were evaluated by magnetic resonance imaging and temporal high-resolution computed tomography in 48 children with congenital sensorineural hearing loss who were cochlear implant candidates...
December 5, 2016: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/27909890/does-severity-of-cerebral-mri-lesions-in-congenital-cmv-infection-correlates-with-the-outcome-of-cochlear-implantation
#3
Stefan Lyutenski, Friedrich Götz, Alexandros Giourgas, Omid Majdani, Eva Bültmann, Heinrich Lanfermann, Thomas Lenarz, Anja M Giesemann
The objective is to investigate whether there is a correlation between the severity of typical brain lesions in congenital cytomegalovirus (cCMV) infection and cochlear implant (CI) outcome. The design of the study is a retrospective single-institutional chart review (2005-2015), performed in a tertiary academic referral center. 23 children with typical signs of cCMV infection on cerebral magnetic resonance imaging (MRI) and bilateral severe-to-profound sensorineural hearing loss were retrospectively evaluated...
December 1, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27909888/off-the-ear-with-no-loss-in-speech-understanding-comparing-the-rondo-and-the-opus-2-cochlear-implant-audio-processors
#4
Stefan Dazert, Jan Peter Thomas, Andreas Büchner, Joachim Müller, John Martin Hempel, Hubert Löwenheim, Robert Mlynski
The RONDO is a single-unit cochlear implant audio processor, which omits the need for a behind-the-ear (BTE) audio processor. The primary aim was to compare speech perception results in quiet and in noise with the RONDO and the OPUS 2, a BTE audio processor. Secondary aims were to determine subjects' self-assessed levels of sound quality and gather subjective feedback on RONDO use. All speech perception tests were performed with the RONDO and the OPUS 2 behind-the-ear audio processor at 3 test intervals. Subjects were required to use the RONDO between test intervals...
December 1, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27900916/electrically-evoked-compound-action-potentials-are-different-depending-on-the-site-of-cochlear-stimulation
#5
Paul van de Heyning, Santiago L Arauz, Marcus Atlas, Wolf-Dieter Baumgartner, Marco Caversaccio, Ronel Chester-Browne, Patricia Estienne, Javier Gavilan, Benoit Godey, Wolfgang Gstöttner, Demin Han, Rudolph Hagen, Martin Kompis, Vlad Kuzovkov, Luis Lassaletta, Franc Lefevre, Yongxin Li, Joachim Müller, Lorne Parnes, Andrea Kleine Punte, Christopher Raine, Gunesh Rajan, Adriana Rivas, José Antonio Rivas, Nicola Royle, Georg Sprinzl, Kurt Stephan, Adam Walkowiak, Yuri Yanov, Kim Zimmermann, Patrick Zorowka, Henryk Skarzynski
One of the many parameters that can affect cochlear implant (CI) users' performance is the site of presentation of electrical stimulation, from the CI, to the auditory nerve. Evoked compound action potential (ECAP) measurements are commonly used to verify nerve function by stimulating one electrode contact in the cochlea and recording the resulting action potentials on the other contacts of the electrode array. The present study aimed to determine if the ECAP amplitude differs between the apical, middle, and basal region of the cochlea, if double peak potentials were more likely in the apex than the basal region of the cochlea, and if there were differences in the ECAP threshold and recovery function across the cochlea...
November 30, 2016: Cochlear Implants International
https://www.readbyqxmd.com/read/27895549/the-repeatable-battery-for-the-assessment-of-neuropsychological-status-for-hearing-impaired-individuals-rbans-h-before-and-after-cochlear-implantation-a-protocol-for-a-prospective-longitudinal-cohort-study
#6
Annes J Claes, Griet Mertens, Annick Gilles, Anouk Hofkens-Van den Brandt, Erik Fransen, Vincent Van Rompaey, Paul Van de Heyning
Background: Currently, an independent relationship between hearing loss and cognitive decline in older adults is suggested by large prospective studies. In general, cochlear implants improve hearing and the quality of life in severely to profoundly hearing impaired older persons. However, little is known about the effects of cochlear implantation on the cognitive evolution in this population. Aim of the study: The primary goal of this prospective, longitudinal cohort study is to explore the cognitive profile of severely to profoundly postlingually hearing impaired subjects before and after cochlear implantation...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27891421/imaging-modality-of-choice-for-pre-operative-cochlear-imaging-hrct-vs-mri-temporal-bone
#7
Poornima Digge, Rajendra N Solanki, Dipali C Shah, Rajesh Vishwakarma, Sandeep Kumar
INTRODUCTION: Congenital inner ear malformations occur as a result of the arrest or aberrance of inner ear development due to the heredity, gene mutation or other factors. Ever since the availability of cochlear implants, pre-operative evaluation by imaging of temporal bone has gained much attention. Precise selection of the candidate for cochlear implant dependent on preoperative radiological investigations. Only CT (Computed Tomography) and MRI (Magnetic Resonance Imaging) can provide a better picture of anatomy and pathology...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27885978/factors-affecting-daily-cochlear-implant-use-in-children-datalogging-evidence
#8
Vijayalakshmi Easwar, Joseph Sanfilippo, Blake Papsin, Karen Gordon
BACKGROUND: Children with profound hearing loss can gain access to sound through cochlear implants (CIs), but these devices must be worn consistently to promote auditory development. Although subjective parent reports have identified several factors limiting long-term CI use in children, it is also important to understand the day-to-day issues which may preclude consistent device use. In the present study, objective measures gathered through datalogging software were used to quantify the following in children: (1) number of hours of CI use per day, (2) practical concerns including repeated disconnections between the external transmission coil and the internal device (termed "coil-offs"), and (3) listening environments experienced during daily use...
November 2016: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/27859305/hearing-loss-associated-with-enlarged-vestibular-aqueduct-and-zero-or-one-mutant-allele-of-slc26a4
#9
Jane Rose, Julie A Muskett, Kelly A King, Christopher K Zalewski, Parna Chattaraj, John A Butman, Margaret A Kenna, Wade W Chien, Carmen C Brewer, Andrew J Griffith
OBJECTIVES/HYPOTHESIS: To characterize the severity and natural history of hearing loss, and the prevalence of having a cochlear implant in a maturing cohort of individuals with enlarged vestibular aqueduct (EVA) and zero or one mutant allele of SLC26A4. STUDY DESIGN: Prospective cohort study of subjects ascertained between 1998 and 2015 at the National Institutes of Health Clinical Center. METHODS: Study subjects were 127 individuals (median age, 8 years; range, 0-59 years) with EVA in at least one ear...
November 15, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27852135/long-term-results-of-hearing-preservation-cochlear-implant-surgery-in-patients-with-residual-low-frequency-hearing
#10
Hideaki Moteki, Shin-Ya Nishio, Maiko Miyagawa, Keita Tsukada, Satoshi Iwasaki, Shin-Ichi Usami
CONCLUSION: Differences were found between patients with stable hearing and those with progressive hearing loss in the lower frequencies with respect to the rate of progression in the contralateral ear. It is suggested that the electric acoustic stimulation (EAS) can provide improvement in hearing ability over the long-term if residual hearing might be lost to some extent. OBJECTIVE: To evaluate the long-term threshold changes in the low frequency hearing of the implanted ear as compared with the non-implanted ear, and the hearing abilities with EAS along with the extent of residual hearing...
November 17, 2016: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/27819651/endoscopic-assisted-cochlear-implantation-a-case-series
#11
Kadir Serkan Orhan, Beldan Polat, Mehmet Çelik, Şenol Çomoğlu, Yahya Güldiken
The aim of the present study was to describe the use of the endoscopic-assisted cochlear implantation in cases with an unsuccessful standard surgical technique because of not achieving adequate exposure to the round window (RW). Three patients with a bilateral profound hearing loss were operated using an endoscopic-assisted cochlear implant procedure at our tertiary university referral center between 2012 and 2014. In all of the patients, a retroauricular "c" shaped incision was performed and a subperiosteal pocket was created...
November 7, 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27812817/translabyrinthine-vestibular-neurectomy-and-simultaneous-cochlear-implant-for-m%C3%A3-ni%C3%A3-re-s-disease
#12
Pietro Canzi, Marco Manfrin, Marco Perotti, Federico Aprile, Silvia Quaglieri, Elisabetta Rebecchi, Giulia Locatelli, Marco Benazzo
BACKGROUND: Surgical management of Ménière's disease (MD) is recommended in case of medical and intratympanic treatment failures. Translabyrinthine vestibular nerve section has been considered the gold standard for denervation procedures in order to control vertigo attacks, although at the cost of sacrificing residual hearing. To the best of our knowledge, no work has been published with regard to a group of patients submitted to translabyrinthine vestibular neurectomy and simultaneous cochlear implant for MD...
November 4, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27808008/inside-implant-criteria-or-not-detection-of-non-organic-hearing-loss-during-cochlear-implant-assessment
#13
Sandeep G Mistry, Simon D Carr, Lynne Tapper, Benjamin Meredith, David R Strachan, Christopher H Raine
OBJECTIVES: The diagnosis of non-organic hearing loss (NOHL) is a difficult but important issue during the assessment process for cochlear implantation (CI). We aim to identify the key factors in identifying patients with NOHL during CI assessment and present our local screening protocol for NOHL. METHODS: A retrospective review of patients referred to the Yorkshire Auditory Implant Service (YAIS) between 2003 and 2015 who were subsequently diagnosed with NOHL during the assessment...
November 3, 2016: Cochlear Implants International
https://www.readbyqxmd.com/read/27806353/treatment-for-hearing-loss-among-the-elderly-auditory-outcomes-and-impact-on-quality-of-life
#14
Raquel Manrique-Huarte, Diego Calavia, Alicia Huarte Irujo, Laura Girón, Manuel Manrique-Rodríguez
The study aim was to determine the benefit of cochlear implantation and hearing aids in older adults diagnosed with hearing loss and to evaluate the index of depression, anxiety and quality of life after such treatments. A retrospective cohort comprised 117 patients older than 65 years and diagnosed with moderate to profound hearing loss who were included and classified into 2 groups (treated vs. non-treated). A battery of tests including auditory (pure-tone average, disyllabic words in quiet at 65 dB SPL) and findings from a series of questions relevant to quality of life were compared between both groups...
November 3, 2016: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/27806352/aging-cognitive-decline-and-hearing-loss-effects-of-auditory-rehabilitation-and-training-with-hearing-aids-and-cochlear-implants-on-cognitive-function-and-depression-among-older-adults
#15
Alessandro Castiglione, Alice Benatti, Carmelita Velardita, Diego Favaro, Elisa Padoan, Daniele Severi, Michela Pagliaro, Roberto Bovo, Antonino Vallesi, Carlo Gabelli, Alessandro Martini
A growing interest in cognitive effects associated with speech and hearing processes is spreading throughout the scientific community essentially guided by evidence that central and peripheral hearing loss is associated with cognitive decline. For the present research, 125 participants older than 65 years of age (105 with hearing impairment and 20 with normal hearing) were enrolled, divided into 6 groups according to their degree of hearing loss and assessed to determine the effects of the treatment applied...
2016: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/27805613/spiral-ganglion-neuron-explant-culture-and-electrophysiology-on-multi-electrode-arrays
#16
Stefan Hahnewald, Marta Roccio, Anne Tscherter, Jürg Streit, Ranjeeta Ambett, Pascal Senn
Spiral ganglion neurons (SGNs) participate in the physiological process of hearing by relaying signals from sensory hair cells to the cochlear nucleus in the brain stem. Loss of hair cells is a major cause of sensory hearing loss. Prosthetic devices such as cochlear implants function by bypassing lost hair cells and directly stimulating SGNs electrically, allowing for restoration of hearing in deaf patients. The performance of these devices depends on the functionality of SGNs, the implantation procedure and on the distance between the electrodes and the auditory neurons...
October 19, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27802265/antisense-oligonucleotide-based-splice-correction-for-ush2a-associated-retinal-degeneration-caused-by-a-frequent-deep-intronic-mutation
#17
Radulfus Wn Slijkerman, Christel Vaché, Margo Dona, Gema García-García, Mireille Claustres, Lisette Hetterschijt, Theo A Peters, Bas P Hartel, Ronald Je Pennings, José M Millan, Elena Aller, Alejandro Garanto, Rob Wj Collin, Hannie Kremer, Anne-Françoise Roux, Erwin Van Wijk
Usher syndrome (USH) is the most common cause of combined deaf-blindness in man. The hearing loss can be partly compensated by providing patients with hearing aids or cochlear implants, but the loss of vision is currently untreatable. In general, mutations in the USH2A gene are the most frequent cause of USH explaining up to 50% of all patients worldwide. The first deep-intronic mutation in the USH2A gene (c.7595-2144A>G) was reported in 2012, leading to the insertion of a pseudoexon (PE40) into the mature USH2A transcript...
November 1, 2016: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/27797418/can-routine-office-based-audiometry-predict-cochlear-implant-evaluation-results
#18
Samuel P Gubbels, Brian C Gartrell, Jennifer L Ploch, Kevin D Hanson
OBJECTIVES/HYPOTHESIS: Determining cochlear implant candidacy requires a specific sentence-level testing paradigm in best-aided conditions. Our objective was to determine if findings on routine audiometry could predict the results of a formal cochlear implant candidacy evaluation. We hypothesize that findings on routine audiometry will accurately predict cochlear implant evaluation results in the majority of candidates. STUDY DESIGN: Retrospective, observational, diagnostic study...
October 31, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27787394/toward-automated-cochlear-implant-fitting-procedures-based-on-event-related-potentials
#19
Mareike Finke, Martin Billinger, Andreas Büchner
OBJECTIVES: Cochlear implants (CIs) restore hearing to the profoundly deaf by direct electrical stimulation of the auditory nerve. To provide an optimal electrical stimulation pattern the CI must be individually fitted to each CI user. To date, CI fitting is primarily based on subjective feedback from the user. However, not all CI users are able to provide such feedback, for example, small children. This study explores the possibility of using the electroencephalogram (EEG) to objectively determine if CI users are able to hear differences in tones presented to them, which has potential applications in CI fitting or closed loop systems...
October 26, 2016: Ear and Hearing
https://www.readbyqxmd.com/read/27779564/x-linked-malformation-and-cochlear-implantation
#20
Henrik Smeds, Jeremy Wales, Filip Asp, Ulrika Löfkvist, Babak Falahat, Britt-Marie Anderlid, Lena Anmyr, Eva Karltorp
OBJECTIVE: To evaluate if cochlear implantation is safe and constitutes an option for hearing rehabilitation of children with x-linked inner ear malformation. STUDY DESIGN: Retrospective patient review in combination with a multidisciplinary follow-up. SETTING: Tertiary referral hospital and cochlear implant program. PATIENTS: Ten children with severe-profound mixed hearing loss and radiological findings consistent with Incomplete Partition type 3 cochlear malformation received cochlear implants during the years 2007 to 2015...
October 21, 2016: Otology & Neurotology
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